US70400A - Division b - Google Patents

Description

T0 ALL WHOM IT `MAY CONCERN:

@uiten gisten .gntrnt @ffice DIVISION B.

IMPROVEMENT IN THE MANUPAGTURE OF RILS POR RAILWAYS.

@lgs dphnle nftrnh in in itgrse ttrrt @anni mit lurking und ni tigt anni.

Bc it known that I, JONATHAN L. BOOTH, of Rochester, in the county of Monroe, and State of New York, have invented a certain new und useful Improvement in Rails for Railroads; und I do hereby declare that the following is a full4 und exact description thereof, reference being had to the accompanying drawings, making part of this specication. Y .Y

Figure 1 is u perspective view of one end of the rail wit-h thc buse and cup disconnected.

Figure 2 :tn end elevation of the rail complete. l

Like letters of reference indicate corresponding parts in both figures.`

I obtained a, patent, dated August 28, 1866, for a method of connecting the cap withthe body byrolling the same on. In that case the rail formed n solid and unyieldingbody from top tO bottom. My present invention consists in employing-,in combination with the cap und body, a space between, which will :allow a. certain degree of' elasticity or yieldingness of the cup :is the truins pass over, the pnrts being s o formed us, :it the sume time, to insure the necessary degreeg'of strength.

As represented in the drawings, A is the body or base of the rail, and `B the cup or tread-piece, which is applied to the base by having its lips turned underjthe edges. Between thesepa'rts is left a, longitudinal space,

.a, as clearly indicated in` iig. 2.v This space is most conveniently-formed by rolling the top of the body or base lwith e corrugation, as shown in fig. 1. I prefer to leave. the checks b b, over which the lips of the cap clasp,

of the rounded form shown; but if desired they may be square or of other form. AI also prefer to make the under side of the cap convex or bugging but it may be ofv'other form. The space a under the cap has n tendency-to give a.-certain vdegree of elasticity tothe cap by leaving it open ut the bottom, and to obviate that rigidity and u'nyieldingnessthat ure produced where the whole rail is mode solid from top to bottom. This elusticity prevents, ina. great degree, abrasion und wear, and renders the rail much more enduring than would otherwise -bc the case. In addition to this, the space has a. tendency to counterbulancc the lateral-expendingvaction of the cap, by allowing a central downward notion to-the'sumc. It is obvious, and has been found by experiment, that the hammering of the wheels has n tendency to expand the surfaceof the cap laterally when' subjected to long usage, thereby Afelasping closer the cheeks b b; but thev same weight of the wheels has olso ar tendency to draw the cup inward pressing down in the central space, und therefore keeps the bearings tight on the cheeks. At the same time the pressure has also a tendency to eiipand the cheeks outward to meet the l cla-sp of thecu-p. This threefold `action will always keep the cap tight to the ruil.

I am aware that a hollow rail, made in a, single piece` for the purpose of lessening the amount of material,

has before been known; such I do not claim.`

WhtI claim ns my invention, and desire to -secure by Letters Patent, is- The cap B, in combination with a base, A, liu-ving u. longitudinal depression in its upper surface, substanf tially as and for the purpose specified.

. In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JONATHAN L. BOOTH. Witnesses:

R. F. Oscoon, J. A. DAVIS.

Images